Initially their career was in Scotland in summer shows, pantomimes and variety weeks.
Subsequently, they moved south of the border with seasons at Bridlington, Scarborough, Great Yarmouth, Bournemouth and Blackpool.
For the early recordings in Glasgow their father Harry Brünjes accompanied the three brothers on piano.
Drew was 83 and was based in Glasgow and Tom was 81 and had been in Los Angeles for over fifty years.
After show business, Harry became a headmaster, Drew a chemistry lecturer and Tom an electronics engineer.